Device for keeping boilers clean.



l PNTENTED NOV. 17, 1903'. E I. w. ROBINSON. DEVIOE EOE KEEPING EOILEEs,'OEEAN.

APPLIOAT'ION FILED MAINE; IOOa.

2 SHEETS-S'HEET 1.

No MODEL.` E

No. 744,619. PATENTED Nov. .17, 1.903,

J. w. ROBINSON. E

DEVICE EOE-KEEPING BoILE'Rs CLEAN. l AvPPLIOATION'FILED MAY 22, 1803.. YNo MoDEL. Y |EBEETss--snnzET 2. 5

NN NN NNNIN 'Num N i um um m the device removed from the boiler.

UNITED STATES Patented November 17, 1903.

VPATENT OFFICE.

JOSEPH WILLIAM ROBINSON, OF AURORA, ILLINOIS, ASSIGNOR TO HARRY G.DALTONAND FRANK R. DALTON, OF AURORA, ILLINOIS.

DEVICE FOR KEEPING BOlLi-:Rs oLsANrl SPECIFICATION forming part ofLetters Patent No. 744,619, dated November 17, 1903.

Appiimion inea May 2z, 1903.v serai No. 158,250. No maa.;

T0 wir, whom t may concern.'

Be it known that I, JOSEPH WILLIAM ROB- INSON, of Aurora, in the countyof Kane and State of Illinois, have invented certain new and usefulImprovements in Devices for Keeping Boilers Clean; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of referperspective view, partially broken away,'of

a boiler, showing the application of my 'im-y provements thereto. Fig. 2is a partial transverse section of the boiler and my improved cleaningdevice. Fig. 3 is a top plan view of is a side elevationlof saidcleaning device. Fig. 5 is a transverse section taken on line 5 5 ofFig. 3.

As shown in said drawings, A designates the boiler, B Bthe'ues thereof,and B the base of the smoke-stack through which the products ofcombustion are discharged after n passing through the iues.

C C designate a plurality of troughs open at their top V'and closed attheir ends. Said troughs are arranged longitudinally in said boiler andside by side in parallel relation. Said troughs are preferably V-shapedin crosssection, and they are supported in the bottom of the boiler adistance above the crownsheet on legs or standardsl D D at the front andrear ends of the group of troughs. As herein shown, `three troughs areemployed, and they are joined-to form a unitary struc# ture by means oftie-barsE, extendingtransversely over and across said group of troughs,one located at each end of the group and one at the middle thereof. Saidtie-bars are rig- Aidly connected with the troughs by means of V-shapedstrips C', which are iitted and secured to the inner faces of the sidewalls of the troughs, and the upper ends of said strips Fig. 4.y

are bent inwardly toward each otherl and overlap and are secured to thetie-bars.

T he'legs or standards D are made of such length as to hold the troughsabove the sphere of themost violent agitationof the water, which is invthe immediate vicinity of the crown-sheetrof the boiler, and saidtroughs are at all timessubmerged in the water in the boiler, so thatthey are always filled with water. The troughs 'are held from beingforced upwardly by the violent ebullition of the water beneath the sainefrom the position which they are intended to occupy by means ofatransverse brace-bar F,located over one end of the group of troughs'and connected.

form andthe upper orr closed end of the de- 'viceconstituting saidbrace-bar.

f In' order to facilitate the insertion and re moval 'of the device intoand from the boiler, the front and rear legs or standards D are hingedto the sidewalls of the outermost troughs in a manner to swing upwardlyvat the side ofthe troughs, and said legs are connected by aconnecting-bar G, which is pivfeet, a collapsible supporting-frame forthe troughs, and the parts are locked in their supporting positions bymeans of brace-rods H, which are loosely connected with the-intermediatetie-bar E and are providedat their forward ends with hooks which fitinsockets in the brace-bar F. When said legs are thus vswung upwardly atthe sides of the ytroughs and the brace-bar swung downwardly in front ofthesame, said troughs may be removed from the boiler through a manholeor hand- IOO hole A of dimensions slightly greater than the width andheight of the group of troughs. Said troughs may be made of a length toextend from one end to the other of said boiler, or two or more groupsof troughs may be employed arranged end to end. The latter arrangementis herein shown.

The apparatus described operates to collect sedimentary matter in thewater and pre vent the same from falling on or accumulating in the formof incrustation or deposit on the crown-sheet, and the mode of operationof the device to eifect this result is as follows: The troughs, asbefore stated, are located below the level of the water, and inasmuch asthey are held above the sphere of the most violent agitation orebnllition of the water in the immediate vicinity of the crown-sheet thebodies of water contained insaid troughs are in a comparativelyquiescent state. The agitation or ebullition of the water occurring justabove the crown-sheet throws upwardly between the troughs strongcurrents, which carry with them sedimentary mattersuch as g magnesia,lime, and mud-held in suspension in the water. As such currents approachthe surface of the water they become weaker and lose their force orpower to carry the sedimentary matter contained therein, so that` thesedimentary matter is released and drops downwardly. Owing to thepresence of ascending currents of water between the adjacent troughs,the sediment thus released from the weakened upper currents will notfall back through the spaces between said troughs, but will be deflectedtoward the less-agitated zones, or spheres, which are locatedimmediately above the relatively quiet bodies of water contained in thetroughs. The sediment is therefore in this manner directed to thetroughs and settles to the bottom thereof, and when the troughs becomefilled or partially filled they are removed from the boiler through thehand or man hole A in the manner described, cleansed of suchaccumulation, and returned to their places.

The troughs C may be supported in the boiler in any suitable manner solong as the substantial relation shown is preserved. rlhe V-shape formof the troughs in cross-section is a desirable one for the reason thatsuch form offers a minimum resistance or impediment to the ascendingcurrents of water, while at the same time affording wi dereceiving-mouths for the troughsfto collect the sediment-falling fromthe weakened upper currents.

I claim as my inventionl. An apparatus for preventing the accumulationof sediment in the bottom of a boiler comprising a plurality of troughsof V shape in cross-section, the wide, open sides of which are directedupwardly, said troughs being located side by side with spaces betweenthe same, and a frame for supporting said troughs and made of suchheight that the troughs are located below the plane of the longitudinalaxis of the boiler, and means for preventing the troughs from rising.

2. An apparatus for preventing the accumulation of sediment in thebottom of a boiler comprising a plurality of upwardly-opening troughs, aframe for supporting said troughs and connecting said troughs in amanner to constitute a unitary structure, said frame being madecollapsible so as to be folded.

3. An apparatus for preventing the acetimulation of sediment in thebottom of a boiler comprising a plurality of upwardly-opening troughsand a folding frame for supporting said troughs above the crown-sheet ofthe boiler and below the water-line thereof, said troughs being locatedside by side and separated by spaces.

4. An apparatus for preventing the accumulation of sediment in thebottom of a boiler comprising a plurality of upwardlyppening troughs, ofV shape in cross-section, and a supporting-frame connecting said troughsside by side with spaces between the same, said frame being constructedto hold the troughs just above the crown-sheet of the boiler and meansfor preventing said frame from rising comprising a part on said frameadapted to engage the boiler-fines.

5. The combination with a tubular boiler, the fines of which arediscontinued a distance above the crown-sheet of the boiler, of aplurality of upwardly-opening Vgshaped troughs located between thecrown-sheet and said iiues, and a frame for supporting said troughsabove the crown-sheet of the boiler and constructed to permit saidtroughs and the frame to be removed as a unitary structure from theboiler through a suitablylocated opening therein.

6. A device for preventing the accumulation of sediment in the bottom ofa boiler comprising a plurality of upwardly-opening troughs adapted tobe supported side by side with spaces between the same in the boiler,means for connecting the troughs to constitute a unitary structure, andlegs or standards for supporting the group of troughs above thecrown-sheet of the boiler, said legs or standards being hinged to thetroughs and being loosely connected by rigid bars.

7. A device for preventing the accumulation of sediment in the bottom ofa boiler comprising a plurality of upwardly-opening troughs adapted tobe supported side by side in the boiler, means for connecting saidtroughs to constitute a unitary structure, legs or standards forsupporting the group ot` troughs above the crown-sheet of the boiler andmeans for preventing said troughs from rising in the boiler.

S. An apparatus for preventing the accumulation of sediment in thebottom of a boiler comprising a plurality of upwardly-opening troughsarranged side by side and separated by spaces, legs or standards hingedto the said troughs, and a brace-bar connected with the legs orstandards at one end of the group IOO IIO

of troughs and adapted to engage the lower y adapted to engage the lowerline of ues, and

a brace-rod hinged to one of said tie-bars and adapted for detachableconnection with said i brace-bar.

line of the ues of the boiler. A

9. An apparatus for preventing the accumulation of sediment in thebottom of a boiler comprising a plurality of upwardly-opening s troughsarranged side by side and separated my invention I ax my signature, inpresby spaces, transverse tie-bars connecting said l ence of twowitnesses, this 18th day of May,

troughs, front and rear legs hinged to the I A. D. 1903.

JOSEPH WILLIAM ROBINSON.

Witnesses: Y

ERNEST JOHN TWEDDELL MOYER, CHARLES NEWTON SHUMAKER.

troughs, connecting-bars, one at each side of i the group of troughs,for connecting the oo'rl responding front and rear legs, a transverse ibrace-bar connected with the front legs and I In testimony that I claimthe foregoing as"

